Agitator implement.



F. J. OSIUS.

AGITATOR IMPLEMENT.

APPLICATION FILED APR.10, 1911. I 1 ,047,279, Patented Dec. 17, 1912.

2 SHEETS-SHEET l.

F. J. OSIUS.

AGITATOR IMPLBMENT. APPLIGATION FILED APR. l0, 1911. 1,047,279, Patented Dec. 17, 1912.

2 SHEETS-SHEET 2.

I' www 5511i Il l u/ Y c @MM/ww its - UNTTED sTATEs PATENT oEEioE.

FREDERICK J. OSIUS, OF RACINE, WISCONSIN.

sonaron IMPLEMENT.

i To all whom t may concern:

vages or the like, its object being to provide structural features whereby the apparatus is rendered durable, simple, positive in its operation and eicient, and at the same time can be economically manufactured, the main objects being: to provide eicientmeans for insulating the motor casing from its supporting bracket; to provide a peripherally notched, agitator disk whereby eiiiciency in mixing is insured; to provide the hollow supporting post with drain openings inter- `sectlng itsrase, whereby accumulated moisture withi the post is exhausted and `thus rust of the parts and the consequence is avoided; f to provide metallic protecting jackets for the motor-brush insulating sleeves, ,the jackets being seated upon the eX- ternal," all of the motor-housing through `which'said sleeves project, whereby breakage o damage thereto incidental to an inadvertent blow is remedied; to provide the spring-controlled telescopic motor-supporting standard with a locking dog whereby said standard and its attached agitatingl mechanism can be locked down to its worklng position; to provide an upwardly inclined tongue that is cut from the standard wall and adapted to engage the top edge of the post whereby said telescopically united' parts. are prevented from being separated after they are once assembled, except through a ositive. operation whereby the tongue is re eased n through the insertion of a tool within a slot formed in the post; to provide la simple spring-controlled plug for closing terminals of the electric motor circuit incidental to the apparatus being lowered to its working positiomthe plug being carried by a plunger that is under the control of a coiled spring having its ends abutting the i post base and head of the standard whereby said standard is lifted when relieved ofpressure andthe closing plug incidental to this movement 1s automatica ly disengaged from the circuit closing terminals, which, in this instance, are shown as springs.

With the above objects in view my invent1on consists in certain peculiarities of construction and combination of parts as are hereinafterset forth with reference to the accompanylng drawings and subsequently,

Specication of Letters Patent. Patented Dec..17, 1912. Application med April 10, 1911. Serial No. 620,258.

Fig.'3, an enlarged sectional plan view, the

section being indicated by line 3-3 of Figi 1, said section illustrating in particular. the vcircular a 'tator disk provided with peri heral no-tc es, and Fig 4, ,A a detail p an view of a portionv of the motor-supporting bracket showing .the motor attached to the arms of said bracket and the means of insulating the motor-attaching screws from the motor casing, the arms being broken away and in section at their ends to clearly illustrate this feature.

Referring by characters to the drawings, 1 represents a metallic base that is suitably y secured to a bed 1, the base having attached thereto ahollow post, into which is fitted a vertically adjustable hollow standard 3.L l

The upper end of the standard has secured ythereto a hollow bracket having a hollow handle 4 extending therefromand a hollow neck portion 4 in the opposite direction, from which neck Spanner arms 5 extend.

T-he bore f the neck 4 has fitted thereto a iianged sleeve 4b, which sleeve extends outwardly from the neck and enters an aperture inthe motor-housing 6, the saidv housingv be-l ing also secured to the arms 5 by means of screws 5 that pass through aperturesin the ends of4 the arms and are in threa'dedl engagement with the housing, the screws being lnsulated from said arms by insulating thimbles 5b and 'washers 5. Thus the aforesaid housing, while connected at three points with the bracket, is entirely insulated therefrom so as to insure the operator against possible shock from the electric energy.

Journaled in end bearings of the motorhousing is a motor-shaft 7 which carries the usual commutator 7a of an electric motor,

which commutator is engaged by springcontrolledbrushes 8 that areprovided with insulating sleeves 9 which extend through apertures provided thereforfinthediousing. InA order to protect these brittle insulating sleeves from breakage \due to an accidental blow,the same are armored by metallic protecting .jackets 10, which jackets ittightly over the ends of the sleeves, being provided with flanges 10a that abut the outer walls of the housing, whereby the impact of a blow will be resisted. The lower end of the motor-shaft extends through its journal and has secured thereto a stem 11 by means of a head 11a that is brazed upon the end of the stem and held in engagement with the motor-shaft by a set-screw 12. The lower end tor disk 13 having its periphery notched at regular intervals thereabout whereby the irregular surfaces presented to the liquid, the samebeing revolved at a high speed. The neck 4a of the bracket is provided with an aperture into which the head of the stand- .ard 3 is fitted, the same being secured by rivets 14 that pass through the bracket neck,

cap is fitted over the bracket aperture as 'shown in Fig. 1. An insulated block 16 is secured to the head end of the hollow' standard, which block is provided with a' central V aperture having a iared mouth, there being a pair of terminal springs 17 secured to the.

upperv face of the block and extending through the central aperture therein for vengagement' with a plug 18, which is carried 40 by a plunger 19 composed of insulating material, that isreciprocatively mounted with ein the hollow standard. A delicate coiled spring 20 is tted over the plunger Within the standard, its ends being interposed between the post base 1 and block 16 at the head'of sald standard, the said spring beings'ecured to the plunger 19 by one or more contracted coils which engage a central annular recess in the plunger intermediate of its ends. l i

Conductor wires a, b, pass through the hollow handle, apertures in the head of the standard and hollow portion of the bracket and are connectedto the brushes 8 as shown. The conductor wire b is interrupted within the neck of the bracket and its interrupted ends are secured/to the terminal springs 17.

Owing to the large diameter of the coiled spring-2O and the lcorresponding large diameter of the plunger 19, lateral movement of .the springl within the standard can not be of suchv moment as to short circuit the motor current when the plug engageetheterminal spring'17, the lay of the plu and spring 'solimit that, owing to t e flare upon of the stem is provided with a circular agitastandard head and ears of a cap 15, which ,will be "positively forced into engagement with the terminal springs, the circuit being thus/closed. In the meantime the agitator has been lowered within themcontents of a vessel-which is designed to be gripped by a vessel-clip 21 that is adjustably secured to said post. The mouth of the post is provided with an engaging member 22 fora spring tongue 23, f85

which tongue is formed by slitting the upf per edge of a standard reinforcing ferrule 24, the tongue being thereafter pressed outwardly for engagement of the adjacent inner tace of the post, it being understood that the ferrule is suitably secured t'o the bottom end of the standard and constitutes a guide therefor i'n connection with the post at thisl end, whereby lateral play is limited in the :telescopic union between these part-s'. Thus 95 it will be seen that after the standard has been inserted into the post the spring to-ngue 23 will prevent disengagement of' the same from said post inadvertently, but should it beadesired to dismantle these parts, it can .boef accomplished by first permitting the tongue 23 to engage the stop member 22 and thereafter a tool may be inserted through a slotted aperture' 22a in the post just below the stop member, whereby the tongue is pressed inwardly to clear said stop member. The post is provided with a series of apertures in its walls 2a, which apertures are located just above thev base-plate 1 and adapted to permit drainage of moisture or 11D the like from the interior of the post, which moisture is liable to accumulate in an implementof this character wherein it is utilized in connection with mixing liquids.

The block 16 of insulated material is se- 115 cured to the head. of the standard 3 and neck portion of the bracket by means of set screws 25, 25a, which set screws pass through the neck standard and engage the block therewithin. The screw 25a is provided with 120 an eared head 26 between which ears is mounted a locking dog 27, the same bem ulcrumed upon"a pin 27". When the stan ard is fully telescoped within the post the nose of this dog enga es a iange 28 of the 125 post and thus locks t e standard down 1n lts working position whereby the closed me tor-circuit is constantly maintained until such time as the dog is released by the operator, which release is effected by pressing the tail of the dog so as to clear its nose from engagement with the ange.

I claim:

1. In an agitator, the combination of a hollowvpost, a hollow supportingstandard in telescopic union with the hollow post, a

hollow handle bracket secured to the head of the standard, arms extending from the bracket, an electric motor secured to the arms, an insulating block secured in the standard head, electric conductors for the motor extendingchrough the hollow bracket and connecting the motor, lterminals interrupting one of the conductors carried by the block, a non-conducting plunger mounted 'in the standard having a circuit closingplug in its end, a coiled spring interposed between the base of the post and head of the stand ard, and means for securing the plunger and pring together intermediate of the ends of e spring, the lower end of the plunger be ing adapted to abut the bottom of the postwhen the standard is depressed to effect closure of the circuit.

2. In an agitator, the combination of a motor-casing, alined journal bearings therein, a handle extending from the casing, an electric motor-shaft mounted in the casing bearings, one end of which motor-,shaft 1s adapted'to protrude through the casing, and a circular disk secured to the protruding end of the shaft, the disk being provided with notched edges.

3. In an agitator, the combination of a spring-controlled standard, a bracket se'- cured to the head ofthe standard, ya motorhousing carried by the bracket having aper tures therein, a motor mounted in the housing, brushes `for the motor, insulating sleeves surrounding the inotor brushes extending through the housing apertures, and metallic `protecting jackets fitti-ng over the protruding ends of the .sleeves abutting said motorhousing.

4. In an agitator, the combination of a hollow post, a spring-controlled standard mounted in the post,`a motor carried by said standard, electricconductors 'for the motor, y

terminals interrupting one of the conductors carried by the standard, a spring-controlled supporting plug within the standard for engagement with the terminals whereby depression of the standard will efect a closure of the circuit, and a locking-dog carried by said standard engageable with the post when the standard is depressed to effect closure of the motor circuit.

5. An agitator comprising a hollow standard.` a motor-driven agitator carried thereby, a h'ollow supporting post fitted about the standard, a catch member in connection 'with the mouth of the post, and a tongue projecting from the bottom portion of said standard for engagement with the catch member whereby inadvertent disengagement of the post and standard is prevented,

and means in connection with the post for permitting access to said tongue to effect .4 head of the standard having a hollow handlek and hollow neck portion, arms extending from the neck portion having apertured ends, an apertured motor-housing fitted between the arms, screws fitted" through the arm apertures for securing the housing thereto, insulating thimbles interposed between the screws and arm apertures whereby the housing is insulated therefrom, andan insulating sleeve extending from the bracket neck into an aperture of said housing.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee in the county of Milwaukee and State of Wisconsin in thepresence of two witnesses.

FREDERICK J. OSIUS.

Witnesses:

L. H. HAMILTON, C. H. BEACH. 

